Collapsible coolers

ABSTRACT

An expandable and collapsible cooler includes: a cooler wall defining an interior storage space of the cooler, the cooler wall comprising an inner collapsible wall and an outer collapsible wall; and a bottom wall to which the collapsible inner and outer walls are joined and from which the collapsible inner and outer walls extend. The inner and outer collapsible walls define an intermediate space therebetween. Each collapsible wall includes flexible elastomeric membranes joined together by rigid portions, each membrane including hinge lines at which the membrane is configured to bend such that the collapsible wall is transitional between a respective collapsed configuration and a respective expanded configuration by bending along the hinge lines. Each configuration corresponds to a stable configuration of the cooler.

CROSS-REFERENCE TO RELATED APPLICATION

The present application is a U.S. continuation application of, andclaims priority under 35 U.S.C. 120 to, U.S. patent application Ser. No.12/636,225, filed Dec. 11, 2009, which '225 application is herebyincorporated herein by reference, and which '225 application is a U.S.nonprovisional patent application of, and claims priority under 35U.S.C. 119(e) to, U.S. provisional patent application Ser. No.61/121,904, filed Dec. 11, 2008, which provisional patent application ishereby incorporated herein by reference. Additionally, the '225application published as U.S. patent application publication number2010/0147015, which patent application publication is incorporatedherein by reference.

COPYRIGHT STATEMENT

All of the material in this patent document is subject to copyrightprotection under the copyright laws of the United States and of othercountries. The copyright owner has no objection to the facsimilereproduction by anyone of the patent document or the patent disclosure,as it appears in the U.S. Patent and Trademark Office patent file orrecords, or other governmental authority or agency, but otherwisereserves all copyright rights whatsoever.

BACKGROUND OF THE INVENTION

A drawback to many conventional coolers is that such coolers generallyrequire a large amount of storage space when not used. Such coolers aretypically stored in a garage, storage shed or closet when not in usebecause of their size. Further, such coolers take up relatively largeamounts of space whenever they are transported for use. This isparticularly disadvantageous when the coolers are packed into the familycar when going on the family vacation at the beach. Because they are solarge and bulky, they tend to consume a large portion of the availablespace in the car, thereby limiting the other items that can be taken onthe vacation. In addition to being disadvantageous for consumers, suchdevices also are less desirable to retailers, who have limited shelfspace on which to display goods for sale.

Collapsible insulated containers also are known which may be utilizedfor storage of perishable items and that have a storage configurationthat is smaller in volume than their use configuration. Such knowndevices are disclosed, for example, in U.S. Pat. Nos. 3,347,060;4,085,785; 4,091,852; 4,612,781; and 7,387,305, as well as in U.S. Pat.Appl. Publ. No. 2007/0023439 A1, each of which is hereby incorporatedherein by reference. While these collapsible coolers are believed to beadequate to meet the intended purposes of their use, it is believed thata need continues to exist for an improved collapsible cooler, and thatsuch need is met by one or more of the embodiments of the presentinvention.

SUMMARY OF THE INVENTION

The present invention includes many aspects and features.

Accordingly, one aspect of the present invention relates to a cooler.The cooler includes a base; an upper rim; and inner and outercollapsible walls extending between said base and said upper rim, eachof said inner and outer collapsible walls comprising a tapered, flexiblemembrane configured to be collapsible.

In a feature of this aspect of the invention, each said membraneincludes a plurality of hinge lines, the membrane being configured tobend at each hinge line.

In a feature of this aspect of the invention, each said membraneincludes a plurality of hinge lines, the membrane being configured tobend at each hinge line; and each hinge line of the plurality of hingelines is generally less thick than another portion of the membrane.

In a feature of this aspect of the invention, each said membraneincludes a plurality of hinge lines, the membrane being configured tobend at each hinge line; and each hinge line has upper and lower hingefaces associated therewith.

In a feature of this aspect of the invention, each said membraneincludes a plurality of hinge lines, the membrane being configured tobend at each hinge line; each hinge line has upper and lower hinge facesassociated therewith, and the upper and lower hinge faces associatedwith a particular hinge line are configured to generally abut oneanother when the membrane is folded about the particular hinge line.

In a feature of this aspect of the invention, each said membraneincludes a plurality of hinge lines, the membrane being configured tobend at each hinge line; each hinge line has upper and lower hinge facesassociated therewith; and the (i) each membrane includes inner and outersurfaces, each surface including upper and lower hinge faces, and (ii)each hinge line has a complementary hinge line, such that when itsmembrane is folded at a first hinge line associated with upper and lowerhinge faces of one of the inner and outer surfaces, its membrane is alsofolded at a second, complementary hinge line associated with upper andlower hinge faces of the other of the inner and outer surfaces.

In a feature of this aspect of the invention, each said membraneincludes a plurality of hinge lines, the membrane being configured tobend at each hinge line; and each membrane is folded at each of thehinge lines.

In a feature of this aspect of the invention, each said membraneincludes a plurality of hinge lines, the membrane being configured tobend at each hinge line; and each membrane is folded at some, but notall, of the hinge lines.

In a feature of this aspect of the invention, each said membraneincludes a plurality of hinge lines, the membrane being configured tobend at each hinge line; and each membrane is not folded at any of thehinge lines.

In a feature of this aspect of the invention, each membrane is stable.

In a feature of this aspect of the invention, each membrane includes astiffening portion.

In a feature of this aspect of the invention, each membrane is formed ofsilicone rubber.

In a feature of this aspect of the invention, each membrane is formed ofsilicone rubber; and the silicone rubber has a softness of about 25 onthe Shore A scale.

In a feature of this aspect of the invention, each of the inner andouter collapsible walls is attached to the base.

In a feature of this aspect of the invention, the cooler furthercomprises an interior space defined by the inner collapsible wall.

In a feature of this aspect of the invention, the cooler furthercomprises a void or intermediate space defined between the inner andouter collapsible walls.

In a feature of this aspect of the invention, the cooler has a volume ofbetween approximately 16 quarts and 120 quarts.

In a feature of this aspect of the invention, the cooler is a watercooler.

In a feature of this aspect of the invention, the water cooler isconfigured to hold between approximately five gallons and approximatelyten gallons.

In a feature of this aspect of the invention, the water cooler has agenerally circular perimeter.

In a feature of this aspect of the invention, each of the inner andouter collapsible walls is attached to the upper rim.

In a feature of this aspect of the invention, the upper rim comprisesinner and outer rim walls.

In a feature of this aspect of the invention, the upper rim comprisesinner and outer rim walls; and the inner and outer rim walls are rigid.

In a feature of this aspect of the invention, the upper rim comprisesinner and outer rim walls; and a peripheral opening is defined betweenthe inner and outer rim walls.

In a feature of this aspect of the invention, the upper rim comprisesinner and outer rim walls; a peripheral opening is defined between theinner and outer rim walls; and a plurality of connectors secure theinner rim wall to the outer rim wall in a spaced apart relation.

In a feature of this aspect of the invention, the upper rim comprisesinner and outer rim walls; a peripheral opening is defined between theinner and outer rim walls; a plurality of connectors secure the innerrim wall to the outer rim wall in a spaced apart relation; and theconnectors comprise spokes.

In a feature of this aspect of the invention, the upper rim comprisesinner and outer rim walls; and an inner opening is defined by the innerrim wall.

In a feature of this aspect of the invention, the upper rim comprisesinner and outer rim walls; a peripheral opening is defined between theinner and outer rim walls; and the cooler further comprises anintermediate space defined between the inner and outer collapsiblewalls, whereby the peripheral opening provides access to theintermediate space.

In a feature of this aspect of the invention, the cooler furthercomprises an interior space defined by the inner collapsible wall, andthe inner opening provides access to the interior space.

In a feature of this aspect of the invention, the cooler furthercomprises a lid.

In a feature of this aspect of the invention, the cooler furthercomprises a lid; and the lid is attached to a first side of the upperrim.

In a feature of this aspect of the invention, the cooler furthercomprises a lid; and the lid is attached at hinges.

In a feature of this aspect of the invention, the cooler furthercomprises a lid; and the lid is configured to be transitioned between(i) a closed position in which the lid is disposed in covering relationto an inner opening and a peripheral opening, and (ii) an open position.

In a feature of this aspect of the invention, the cooler furthercomprises a lid; and the lid is in the closed position.

In a feature of this aspect of the invention, the cooler furthercomprises a lid; and the lid is in the open position.

In a feature of this aspect of the invention, the cooler furthercomprises a lid; and the lid includes a raised peripheral portion.

In a feature of this aspect of the invention, the cooler furthercomprises a lid; and the lid includes a fastening component.

In a feature of this aspect of the invention, the cooler furthercomprises a lid; the lid includes a fastening component; and thefastening component is a male fastening insert configured to mate with afemale fastening slot of the upper rim.

In a feature of this aspect of the invention, each of the inner andouter collapsible walls is configured to transition between a fullyexpanded configuration, a fully collapsed configuration, and a pluralityof partially collapsed configurations.

In a feature of this aspect of the invention, said inner and outercollapsible walls generally expand or collapse together.

In a feature of this aspect of the invention, said outer collapsiblewall is attached to a top surface of said base, and said innercollapsible wall includes a bottom wall.

In a feature of this aspect of the invention, outer collapsible wall isattached to a top surface of said base, and said inner collapsible wallincludes a bottom wall; and an intermediate space is defined between (i)the inner and outer collapsible walls, and (ii) the top surface of saidbase and the bottom wall of said inner collapsible wall.

In a feature of this aspect of the invention, said inner collapsiblewall is collapsed to a greater degree than said outer collapsible wall.

In a feature of this aspect of the invention, said upper rim includes aclosed top surface.

In a feature of this aspect of the invention, said cooler furthercomprises an intermediate space defined between said inner and outercollapsible walls.

In a feature of this aspect of the invention, the cooler furthercomprises a drain conduit.

In a feature of this aspect of the invention, the cooler furthercomprises a drain conduit; and the drain conduit is a cylindrical tubeproviding fluid communication between an exterior of the cooler and aninterior space defined by said inner collapsible wall.

In a feature of this aspect of the invention, the cooler furthercomprises a drain conduit; and the drain conduit is a cylindrical tubeproviding fluid communication between an exterior of the cooler and anintermediate space defined between said inner and outer collapsiblewalls.

In a feature of this aspect of the invention, the cooler furthercomprises a drain conduit; and the cooler further comprises a seconddrain conduit.

In a feature of this aspect of the invention, the cooler furthercomprises a drain conduit; and the cooler further comprises a seconddrain conduit providing fluid communication between an exterior of thecooler and an intermediate space defined between said inner and outercollapsible walls.

In a feature of this aspect of the invention, the cooler furthercomprises a drain conduit; the cooler further comprises a second drainconduit; and the second drain conduit is a cylindrical tube.

In a feature of this aspect of the invention, the cooler furthercomprises a drain conduit; and the drain conduit comprises a plug.

In a feature of this aspect of the invention, the cooler furthercomprises a drain conduit; and the drain conduit comprises a spigot.

In a feature of this aspect of the invention, the cooler comprises twogripping handles.

In a feature of this aspect of the invention, the cooler comprises twogripping handles; and each gripping handle comprises a portion of saidupper rim extending beyond a lid of the cooler when the lid is in aclosed position.

In a feature of this aspect of the invention, the cooler comprises twogripping handles; and each gripping handle is defined by an aperture insaid upper rim.

In a feature of this aspect of the invention, the cooler comprises agripping handle.

In a feature of this aspect of the invention, the cooler comprises agripping handle; and the gripping handle comprises a portion of saidupper rim extending beyond a lid of the cooler when the lid is in aclosed position.

In a feature of this aspect of the invention, the cooler comprises agripping handle; and the gripping handle is defined by an aperture insaid upper rim.

In a feature of this aspect of the invention, said base comprises twopairs of coaxial wheels.

In a feature of this aspect of the invention, said base comprises a pairof coaxial wheels.

In a feature of this aspect of the invention, said base comprises a pairof coaxial wheels; and each wheel of the pair of coaxial wheels is largeenough to easily roll across sand.

In a feature of this aspect of the invention, said base comprises a pairof coaxial wheels; and each wheel of the pair of coaxial wheels has aheight of about ten inches.

In a feature of this aspect of the invention, said base comprises a pairof coaxial wheels; and each wheel of the pair of coaxial wheels has atread width of about three inches.

In a feature of this aspect of the invention, said upper rim comprises alid, said lid including a cup holder.

In a feature of this aspect of the invention, said upper rim comprises alid, said lid including a cup holder defined therein.

In a feature of this aspect of the invention, said upper rim has agreater diameter than a diameter of said base.

In a feature of this aspect of the invention, said base has a greaterdiameter than a diameter of said upper rim.

In a feature of this aspect of the invention, said upper rim has adiameter substantially equal to a diameter of said base.

In a feature of this aspect of the invention, each said membraneincludes a top portion and a bottom portion, a diameter of the topportion being greater than a diameter of the bottom portion.

In a feature of this aspect of the invention, each said membraneincludes a top portion and a bottom portion, a diameter of the bottomportion being greater than a diameter of the top portion.

In a feature of this aspect of the invention, each said membraneincludes a top portion and a bottom portion, a diameter of the bottomportion being substantially equal to a diameter of the top portion.

In a feature of this aspect of the invention, said upper rim has agreater diameter than a peripheral profile of said base.

In a feature of this aspect of the invention, said base has a greaterperipheral profile than a peripheral profile of said upper rim.

In a feature of this aspect of the invention, said upper rim has aperipheral profile substantially equal to a peripheral profile of saidbase.

In a feature of this aspect of the invention, each said membraneincludes a top portion and a bottom portion, a peripheral profile of thetop portion being greater than a peripheral profile of the bottomportion.

In a feature of this aspect of the invention, each said membraneincludes a top portion and a bottom portion, a peripheral profile of thebottom portion being greater than a peripheral profile of the topportion.

In a feature of this aspect of the invention, each said membraneincludes a top portion and a bottom portion, a peripheral profile of thebottom portion being substantially equal to a peripheral profile of thetop portion.

In a feature of this aspect of the invention, said base includes fourrotating wheels.

In a feature of this aspect of the invention, said base includes threerotating wheels.

In a feature of this aspect of the invention, said base comprises ahandle attached thereto.

In a feature of this aspect of the invention, said upper rim comprises ahandle attached thereto.

In a feature of this aspect of the invention, said upper rim comprises ahandle attached thereto; and the handle is attached to the upper rim bya hinge.

In a feature of this aspect of the invention, the cooler furthercomprises a carrying handle rotatably attached to said upper rim.

In a feature of this aspect of the invention, the cooler furthercomprises a carrying handle rotatably attached to said upper rim; andthe carrying handle is configured to swivel from a first side of thecooler to a second side of the cooler.

In a feature of this aspect of the invention, the cooler furthercomprises a carrying handle rotatably attached to said upper rim; andthe carrying handle includes a grip portion.

In a feature of this aspect of the invention, when the cooler is in afully collapsed configuration, each membrane is generally arranged in acommon plane, and the carrying handle is configured to retain the coolerin the fully collapsed configuration.

In a feature of this aspect of the invention, said upper rim isconfigured to be secured to said base when the cooler is in a fullycollapsed configuration.

In a feature of this aspect of the invention, said upper rim isconfigured to be secured to said base utilizing snap fasteners.

In a feature of this aspect of the invention, said outer collapsiblewall is generally unexposed when the cooler is in a fully collapsedconfiguration.

In a feature of this aspect of the invention, said base is shaped anddimensioned to mate with said upper rim when the cooler is in a fullycollapsed configuration.

In a feature of this aspect of the invention, the cooler has a generallyrectangular perimeter.

In a feature of this aspect of the invention, the cooler has a generallytrapezoidal perimeter.

In a feature of this aspect of the invention, the cooler has a generallyelliptical perimeter.

In a feature of this aspect of the invention, the cooler has a generallycircular perimeter.

In a feature of this aspect of the invention, the cooler furthercomprises a lid, the lid being completely detachable from said upperrim.

In a feature of this aspect of the invention, each of said inner andouter collapsible walls comprises a plurality of membranes.

In a feature of this aspect of the invention, each of said inner andouter collapsible walls comprises a plurality of membranes; and each ofsaid inner and outer collapsible walls further comprises a plurality ofrigid portions, each rigid portion joining together two or moremembranes of the plurality of membranes.

Another aspect of the present invention relates to a cooler. The coolerincludes an upper rim; an inner collapsible wall extending between aninner bottom wall and said upper rim; and an outer collapsible wallextending between an outer bottom wall and said upper rim; wherein eachof said inner and outer collapsible walls comprises a tapered, flexiblemembrane configured to collapse.

In a feature, each of said inner and outer collapsible walls comprises atapered, flexible membrane configured to collapse between two stableconfigurations and at least one intermediate configuration such that thecooler has a collapsed configuration and two usable configurations, thetwo usable configurations having a different containment volume forreceiving items within the cooler.

In a feature of this aspect of the invention, an intermediate space isdefined (a) between said inner and outer collapsible walls, and (b)between the inner and outer bottom walls.

Another aspect of the present invention relates to a cooler. The coolerincludes an upper rim; an inner collapsible wall extending between abottom wall and said upper rim; and an outer collapsible wall extendingbetween the bottom wall and said upper rim; wherein each of said innerand outer collapsible walls comprises a tapered, flexible membraneconfigured to be collapsible.

Another aspect of the present invention relates to a cooler. The coolerincludes an upper rim; an inner collapsible wall extending between abottom wall and said upper rim; and an outer collapsible wall extendingbetween the bottom wall and said upper rim; wherein each of said innerand outer collapsible walls comprises a tapered, flexible membraneconfigured to collapse between two stable configurations and at leastone intermediate configuration such that the cooler has a collapsedconfiguration and two usable configurations, the two usableconfigurations having a different containment volume for receiving itemswithin the cooler.

Another aspect of the present invention relates to a cooler. The coolerincludes an inner collapsible wall extending upwards from a bottom wall;and an outer collapsible wall extending upwards from a bottom wall;wherein each of said inner and outer collapsible walls comprises atapered, flexible membrane configured to be collapsible.

Another aspect of the present invention relates to a cooler. The coolerincludes an inner collapsible wall extending upwards from a bottom wall;and an outer collapsible wall extending upwards from a bottom wall;wherein each of said inner and outer collapsible walls comprises atapered, flexible membrane configured to collapse between two stableconfigurations and at least one intermediate configuration such that thecooler has a collapsed configuration and two usable configurations, thetwo usable configurations having a different containment volume forreceiving items within the cooler.

In a feature of this aspect of the invention, the cooler furtherincludes a plurality of spokes joining together said inner and outercollapsible walls.

Another aspect of the present invention relates to a cooler. The coolerincludes a base; and inner and outer collapsible walls extending upwardfrom said base, each of said inner and outer collapsible wallscomprising a tapered, flexible membrane configured to be collapsible.

Another aspect of the present invention relates to a cooler. The coolerincludes a base; and inner and outer collapsible walls extending upwardfrom said base, each of said inner and outer collapsible wallscomprising a tapered, flexible membrane configured to collapse betweentwo stable configurations and at least one intermediate configurationsuch that the cooler has a collapsed configuration and two usableconfigurations, the two usable configurations having a differentcontainment volume for receiving items within the cooler.

Another aspect of the present invention relates to a cooler. The coolerincludes a base; an upper rim; and a collapsible wall extending betweensaid base and said upper rim, said collapsible wall comprising atapered, flexible membrane configured to be collapsible.

Another aspect of the present invention relates to a cooler. The coolerincludes a base; an upper rim; and a collapsible wall extending betweensaid base and said upper rim, said collapsible wall comprising atapered, flexible membrane configured to collapse between two stableconfigurations and at least one intermediate configuration such that thecooler has a collapsed configuration and two usable configurations, thetwo usable configurations having a different containment volume forreceiving items within the cooler.

Another aspect of the present invention relates to a transportableapparatus. The transportable apparatus includes a cooler and a wheeledplatform.

In addition to the aforementioned aspects and features of the presentinvention, it should be noted that the present invention furtherencompasses the various possible combinations and subcombinations ofsuch aspects and features.

BRIEF DESCRIPTION OF THE DRAWINGS

Further aspects, features, embodiments, and advantages of the presentinvention will become apparent from the following detailed descriptionwith reference to the drawings, wherein various embodiments of coolerswithin the scope of the present invention are disclosed and describedwith reference to FIGS. 1-24, many of which represent preferredembodiments, and wherein:

FIG. 1 is a perspective view of a cooler in an expanded configuration inaccordance with a first preferred embodiment of the invention;

FIG. 2 is a side elevational view of a membrane representative of eachof the inner and outer collapsible walls of the cooler of FIG. 1;

FIG. 3 is a top plan view of the membrane of FIG. 2;

FIG. 4 is a cross-sectional view of the membrane of FIG. 3 taken alongline 4-4;

FIG. 5 is a top plan view of the cooler wall of the cooler of FIG. 1;

FIG. 6A is a perspective view of the cooler of FIG. 1 in a fullyexpanded configuration with the lid closed;

FIG. 6B is a perspective view of the cooler of FIG. 6A in a partiallycollapsed configuration;

FIG. 6C is a perspective view of the cooler of FIG. 6A in anotherpartially collapsed configuration;

FIG. 6D is a perspective view of the cooler of FIG. 6A in a fullycollapsed configuration;

FIG. 7 is a perspective view of a variation of the cooler of FIG. 6A;

FIG. 8 is cross-sectional view of a cooler wall and base in accordancewith a second preferred embodiment of the invention;

FIG. 9 is a perspective view of a cooler in accordance with a thirdpreferred embodiment of the invention;

FIG. 10 is a perspective view of a cooler in accordance with a fourthpreferred embodiment of the invention;

FIG. 11A is a top plan view of a cooler in accordance with a fifthpreferred embodiment of the invention;

FIG. 11B is a top plan view of another cooler in accordance with thefifth preferred embodiment of the invention;

FIG. 12A is a perspective plan view of a cooler in accordance with asixth preferred embodiment of the invention;

FIG. 12B is a side view of another cooler in accordance with the sixthpreferred embodiment of the invention;

FIG. 13 is a perspective view of a cooler in accordance with a seventhpreferred embodiment of the invention;

FIG. 14 is a perspective view of a cooler in accordance with an eighthpreferred embodiment of the invention;

FIG. 14A is a perspective view of the cooler of FIG. 14 in a fullyexpanded configuration with the lid closed;

FIG. 14B is a perspective view of the cooler of FIG. 14A in a partiallycollapsed configuration;

FIG. 14C is a perspective view of the cooler of FIG. 14A in anotherpartially collapsed configuration;

FIG. 14D is a perspective view of the cooler of FIG. 14A in a fullycollapsed configuration;

FIG. 15 is a perspective view of a cooler in accordance with a ninthpreferred embodiment of the invention;

FIG. 15A is a perspective view of the cooler of FIG. 14 in a fullyexpanded configuration with the lid closed;

FIG. 15B is a perspective view of the cooler of FIG. 14A in a partiallycollapsed configuration;

FIG. 15C is a perspective view of the cooler of FIG. 14A in anotherpartially collapsed configuration;

FIG. 15D is a perspective view of the cooler of FIG. 14A in a fullycollapsed configuration;

FIG. 16 is a perspective view of a cooler in accordance with a tenthpreferred embodiment of the invention;

FIG. 17A is a perspective view of a cooler in accordance with aneleventh preferred embodiment of the invention;

FIG. 17B is another perspective view of the cooler of FIG. 17A;

FIG. 18A is a perspective view of a cooler in accordance with a twelfthpreferred embodiment of the invention;

FIG. 18B is another perspective view of the cooler of FIG. 18A;

FIG. 19A is a perspective view of a cooler in accordance with athirteenth preferred embodiment of the invention;

FIG. 19B is another perspective view of the cooler of FIG. 19A;

FIG. 20A is a perspective view of a cooler in accordance with afourteenth preferred embodiment of the invention;

FIG. 20B is a perspective view of the wall of the cooler of FIG. 20A;

FIG. 21 is a cross-sectional view of a wall of a cooler in accordancewith a fifteenth preferred embodiment of the invention;

FIG. 22 is a cross-sectional view of a wall of a cooler in accordancewith a sixteenth preferred embodiment of the invention;

FIG. 23 is a perspective view of a cooler in accordance with aseventeenth preferred embodiment of the invention; and

FIG. 24 is a perspective view of a cooler in accordance with anineteenth preferred embodiment of the invention.

DETAILED DESCRIPTION OF THE INVENTION

As a preliminary matter, it will readily be understood by one havingordinary skill in the relevant art (“Ordinary Artisan”) that the presentinvention has broad utility and application. Furthermore, any embodimentdiscussed and identified as being “preferred” is considered to be partof a best mode contemplated for carrying out the present invention.Other embodiments also may be discussed for additional illustrativepurposes in providing a full and enabling disclosure of the presentinvention and may or may not be a preferred embodiment. Moreover, manyembodiments, such as adaptations, variations, modifications, andequivalent arrangements, will be implicitly disclosed by the embodimentsdescribed herein and fall within the scope of the present invention.

Accordingly, while the present invention is described herein in detailin relation to one or more embodiments, it is to be understood that thisdisclosure is illustrative and exemplary of the present invention, andis made merely for the purposes of providing a full and enablingdisclosure of the present invention. The detailed disclosure herein ofone or more embodiments is not intended, nor is to be construed, tolimit the scope of patent protection afforded the present invention,which scope is to be defined by the claims and the equivalents thereof.It is not intended that the scope of patent protection afforded thepresent invention be defined by reading into any claim a limitationfound herein that does not explicitly appear in the claim itself.

Thus, for example, any sequence(s) and/or temporal order of steps ofvarious processes or methods that are described herein are illustrativeand not restrictive. Accordingly, it should be understood that, althoughsteps of various processes or methods may be shown and described asbeing in a sequence or temporal order, the steps of any such processesor methods are not limited to being carried out in any particularsequence or order, absent an indication otherwise. Indeed, the steps insuch processes or methods generally may be carried out in variousdifferent sequences and orders while still falling within the scope ofthe present invention. Accordingly, it is intended that the scope ofpatent protection afforded the present invention is to be defined by theappended claims rather than the description set forth herein.

Additionally, it is important to note that each term used herein refersto that which the Ordinary Artisan would understand such term to meanbased on the contextual use of such term herein. To the extent that themeaning of a term used herein—as understood by the Ordinary Artisanbased on the contextual use of such term—differs in any way from anyparticular dictionary definition of such term, it is intended that themeaning of the term as understood by the Ordinary Artisan shouldprevail.

Furthermore, it is important to note that, as used herein, and “an” eachgenerally denotes “at least one,” but does not exclude a pluralityunless the contextual use dictates otherwise. Thus, reference to “apicnic basket having an apple” describes “a picnic basket having atleast one apple” as well as “a picnic basket having apples.” Incontrast, reference to “a picnic basket having a single apple” describes“a picnic basket having only one apple.”

When used herein to join a list of items, “or” denotes “at least one ofthe items,” but does not exclude a plurality of items of the list. Thus,reference to “a picnic basket having cheese or crackers” describes “apicnic basket having cheese without crackers”, “a picnic basket havingcrackers without cheese”, and “a picnic basket having both cheese andcrackers.” Finally, when used herein to join a list of items, “and”denotes “all of the items of the list.” Thus, reference to “a picnicbasket having cheese and crackers” describes “a picnic basket havingcheese, wherein the picnic basket further has crackers,” as well asdescribes “a picnic basket having crackers, wherein the picnic basketfurther has cheese.”

Referring now to the drawings, in which like numerals represent likecomponents throughout the several views, preferred embodiments of thepresent invention are next described. The following description ofpreferred embodiment(s) is merely exemplary in nature and is in no wayintended to limit the invention, its application, or uses.

A First Preferred Embodiment

FIG. 1 is a perspective view of a cooler 10 in an expanded configurationin accordance with a first of many preferred embodiments of the presentinvention. The cooler 10 comprises a base 20, an upper rim 30, a lid 40,and a cooler wall 50 extending between the base 20 and the upper rim 30.

The base 20 includes two pairs of coaxial wheels 22, a bottom 24, and atop surface 26. The two pairs of coaxial wheels 22 are each connected tothe base 20 with a conventional wheel axle. The wheels 22 facilitaterolling motion of the cooler 10 from one location to another and arepreferably constructed of a material capable of supporting the weight ofthe items stored in and on the cooler 10. It is preferred that thewheels 22 be able to support at least about ninety pounds. It is morepreferred that the wheels 22 be able to support at least about onehundred and ten pounds.

The base 20 has a generally rectangular perimeter. Additionally, thebase 20 is tapered such that the top surface 26 of the base 20 has agreater perimeter than the bottom 24 of the base 20. In a variation,however, the base is not tapered and, instead, includes generallyorthogonal side and lateral surfaces.

Preferably, a handle 28 is attached to the base 20 at a hinge such thatit can be raised and lowered about the hinge. The handle 28 includes anelongate shaft portion 27 having a handle portion 29 affixed to its end,as can be seen in FIG. 1. The handle 28 may telescope and may beattachable to and readily unfastenable from the base 20. Moreover, thehandle 28 may be storable under the base 20 in a similar manner as thatdisclosed in U.S. Patent Application Publication No. 2006/0237926, whichis incorporated herein by reference.

The cooler wall 50 is attached to the top surface 26 of the base 20. Thecooler wall 50 includes a collapsible inner wall 52 and a collapsibleouter wall 54. Preferably, one or both collapsible walls 52,54 arebonded, adhered, or cold-molded to the base 20. Each collapsible wall52,54 comprises a flexible, elastomeric membrane 60 (see, e.g., FIG. 2).In at least one embodiment, one or more collapsible walls consists of aflexible, elastomeric membrane and nothing further that would impede thecollapsibility and nesting of sections of the walls.

FIG. 2 illustrates such a membrane 60 having a top portion 66 and abottom portion 67. The membrane 60 has a cross-sectional perimeter takenhorizontally in FIG. 2 that is generally rectangular with roundedcorners along its entire extent from the top portion 66 to the bottomportion 67, but the membrane is tapered such that the top portion 66 hasa greater perimeter than the perimeter of the bottom portion 67.

FIG. 3 is a top plan view of the membrane 60, in which the rectangularperimeters at various elevations thereof can be clearly seen, therectangular perimeters being concentrically arranged and, when fullycollapsed, nested within each other and arranged generally within acommon plane.

The membrane 60 includes a first series of a plurality of hinge lines 62and a second series of a plurality of hinge lines 62′, as can be seen inFIGS. 2 and 3. FIG. 4 is a cross-sectional view of the membrane 60 alongline 4-4 of FIG. 3 and also shows the hinge lines 62,62′. The hingelines 62,62′ are thinner, and thus more flexible and more deformable,than other portions of the membrane 60.

Each hinge line 62 is defined between an upper hinge face 63 and a lowerhinge face 64. The membrane 60 is configured to be bent at each hingeline 62 such that the associated upper hinge face 63 is bent downwardsgenerally towards the associated lower hinge face 64. By bending amembrane 60 thusly, the membrane 60 can be transitioned to a collapsedyet stable state having a reduced height.

The membrane 60 has both an outer surface 68 and an inner surface 69.The hinge faces 63,64 associated with the hinge lines 62 are part of theouter surface 68. Each of the second hinge lines 62′ similarly has hingefaces 63′,64′ associated therewith that are part of the inner surface69. In this way, although each consecutive hinge line 62,62′ is definedin both the inner and outer surfaces 68,69, the surface 68,69 whichcomprises the associated hinge faces 63,64 and hinge faces 63′,64′alternates.

It will be understood that when membrane 60 is folded at a hinge line 62associated with hinge faces 63,64 of outer surface 68 (such as at 65 inFIG. 4), the membrane 60 is also folded at a complementary hinge line62′ associated with hinge faces 63′,64′ of the inner surface 69 (such asat 65′ in FIG. 4).

It also will be understood that membrane 60 has a fully collapsedconfiguration, wherein it is bent or folded at each hinge line 62,62′; afully expanded configuration, wherein it is not bent or folded at anyhinge line 62,62′; and a plurality of partially collapsedconfigurations, wherein it is collapsed at one or more pair of hingelines 62,62′ but not at all of the pair of hinge lines 62,62′.Preferably, when the membrane 60 is in the fully collapsedconfiguration, it can be characterized as having a plurality ofconcentric portions all disposed generally in the same plane.Additionally, the membrane 60 is preferably configured to be stable notonly in the fully collapsed and fully expanded configurations, but inone or more partially collapsed configurations as well.

In addition to having hinge lines 62,62′, a membrane can also includeone or more stiffening portions. An example of a membrane having suchstiffening portions is disclosed in U.S. Patent Application PublicationNo. 2006/0096929, which publication is hereby incorporated herein byreference. In this publication the stiffening portions are characterizedas “stiffening rings”, but it will be appreciated that these stiffeningrings could be implemented as “stiffening portions” in one or morepreferred embodiments in accordance with the present invention. Further,the membranes themselves as detailed therein could be utilized orimplemented, either with or without changes or modifications, in one ormore preferred embodiments in accordance with the present invention.

Similarly, the membranes detailed in U.S. Patent Application PublicationNo. 2007/0251874, which publication is also hereby incorporated hereinby reference, could be utilized or implemented, either with or withoutchanges or modifications, in one or more preferred embodiments inaccordance with the present invention.

Preferably, a membrane is formed of silicone rubber, such as, forexample, silicone rubber having a softness of about 25 on the Shore Ascale.

Returning to the cooler 10 of FIG. 1, the bottom portion of the membraneof the inner collapsible wall 52 and the bottom portion of the membraneof the outer collapsible wall 54 are each attached to the top surface 26of the base 20. As can be seen in FIG. 5, which is a top plan view ofthe inner collapsible wall 52 and outer collapsible wall 54 of thecooler 10 of FIG. 1, wherein other components of the cooler 10 includingthe upper rim 30 have been omitted for clarity, an interior space 12 isdefined by the inner collapsible wall 52 and an intermediate space 14 isdefined between the inner collapsible wall 52 and the outer collapsiblewall 54. Each of these spaces 12,14 is bounded at a bottom by the topsurface 26 of the base 20, which base 20 may or may not additionallydefine the bottom surface of such respective space 12,14. Preferably,the interior space 12 of the cooler 10, in which food and beverages maybe stored, has a volume of between approximately ten (10) quarts andseventy-five (75) quarts.

The top portion 66 of the respective membrane of the inner collapsiblewall 52 and the outer collapsible wall 54 (of which membrane 60 isrepresentative) is attached to the upper rim 30. The upper rim 30includes a rigid inner rim wall 32 and a rigid outer rim wall 34, asillustrated in FIG. 1. Each of the rim walls 32,34 has a generallyrectangular perimeter with rounded corners and is preferably taperedsuch that a top portion of each rim wall 32,34 has a greater perimeterthan a bottom portion of each rim wall 32,34. In variations, however,one or more of the rim walls may not be tapered and, instead, mayinclude generally orthogonal side and lateral surfaces. The inner rimwall 32 is attached at its bottom portion to the inner collapsible wall52, and the outer rim wall 34 is attached at its bottom portion to theouter collapsible wall 54.

The upper rim 30 includes a plurality of connectors 33 that secure theinner rim wall 32 and the outer rim wall 34 to one another in a spacedapart relationship (i.e., the inner rim wall 32 and the outer rim wall34 are preferably spaced apart), as can be seen in FIG. 1. Theconnectors 33 resemble spokes extending between the rim walls 32,34.Because the connectors 33 are spaced apart from one another, peripheralopenings 39 are defined between the rim walls 32,34 and the connectors33). The peripheral openings 39 each provides access to the intermediatespace 14. An inner opening 38 defined by the inner rim wall 32 providesaccess to the interior storage space 12 of the cooler 10.

A lid 40 is attached to a first side of the upper rim 30, and morespecifically to the outer rim wall 34, by hinges 42. The lid 40 can belowered about the hinges 42 into a closed position in which it fullycovers both the inner opening 38 and the peripheral openings 39, therebysealing both the interior space 12 and the intermediate space 14, asillustrated in FIG. 6A. The lid 40 preferably includes a raisedperipheral portion 48 sized and positioned to abut the inner and outerrims 32,34 in covering relation to the peripheral openings 39 when thelid 40 is in the closed position.

The lid 40 includes a male fastening insert 46 configured to mate with afemale fastening slot 44, located on a second side opposite the firstside, such that the lid 40 is retained in a closed position.

It will be understood that because the collapsible walls 52,54 eachcomprise a membrane, such as, for example, membrane 60 describedhereinabove, each of the walls 52,54 can be transitioned between a fullyexpanded configuration, a fully collapsed configuration, and one or morepartially collapsed, intermediate configurations. Further, because bothof the collapsible walls 52,54 are attached to the upper rim 30, thecollapsible walls 52,54 generally collapse and expand together. Thus, bytransitioning the collapsible walls 52,54 from one configuration toanother, the cooler 10 itself is transitioned between a fully expandedconfiguration, which can be seen in each FIGS. 1 and 6A; a plurality ofpartially collapsed configurations, two of which can be seenrespectively in FIGS. 6B,6C; and a fully collapsed configuration, whichcan be seen in FIG. 6D. The collapsible walls 52,54 are configured suchthat the cooler 10 will be stable in all three expanded configurations(FIGS. 6A,6B,6C), and will also be stable in the completely collapsedconfiguration (FIG. 6D).

It will be understood from the above description that the cooler 10 hasa plurality of configurations that may be utilized. Various examplesutilizing these configurations will now be described, although it willbe appreciated that many other uses that are not described do exist andalso lie within the scope of the present invention.

A user wishing to keep items cooled or chilled utilizes the cooler 10 ineither the fully expanded configuration, or one of the partiallycollapsed configurations. It will be understood that the interior space12 will be larger, and thus the volume of items that can be stored willbe greater, when the cooler is in the fully expanded configuration.

To store items in the cooler 10, a user first disengages the malefastening insert 46 from the female fastening slot 44. The user thenlifts the lid 40, thereby exposing the inner opening 38 and theperipheral openings 39. The user inserts ice through the peripheralopenings 39 into the intermediate space 14 of the cooler wall 50, andplaces the items to be chilled or otherwise kept cool within theinterior storage space 12 of the cooler 50. The ice in the intermediatespace 14, which is separated by the collapsible inner wall 52, surroundsthe interior space 12 and chills the interior space 12. The lid 40 canbe lowered and the male fastening insert 46 engaged with the femalefastening slot 44, thus retaining the lid in the closed position.

The handle 28 can be grasped and the cooler 10 rolled from its currentlocation to another location, where the cooler 10 can be opened toprovide access to the chilled items. The handle 28 also is pivotablyconnected to the base by a hinge 31 (shown in dashed lines in FIGS. 1and 6A), and the handle 28 rotates relative to the base 20 (as shown bythe arrow in FIG. 6A), whereby the handle 28 itself may be retracted androtated to under the base 20 when the cooler 10 is not being pulled.

A variation of the cooler 10 is illustrated in FIG. 7, wherein cooler10′ is identical in structure to cooler 10 and further includes bracketmembers 43. The bracket members 43 are preferably located at the cornersof the cooler 10′ and extend between and interconnect the base 20 andthe upper rim 30. Each bracket member 43 may be removably attached toeach of the base 20 and rim 30, or alternatively, may be removablyattached to one of the base 20 and rim 30 and pivotably attached to theother of the base 20 and rim 30, whereby the bracket members 43 may beretracted within a corresponding recess within the base 20 or rim 30when not used. The bracket members 43 further may telescope betweenvarious locked extents so as to support the cooler 10′ in more than oneof its stable configurations for use. Alternatively, different sets ofbracket members may be removably attached to the base 20 and rim 30 forsupport of the cooler 10′ in its various expanded configurations foruse.

The bracket members 43 serve to convey tensional forces between the base20 and the upper rim 30 if and when the cooler is lifted by the upperrim 30. The bracket members 43 are preferably included in the cooler 10if the cooler is not otherwise constructed so as to be able to withstandthe tensional forces in one or both of the collapsible walls 52,54 whenthe fully loaded cooler 10 is in the fully expanded configuration and islifted from the upper rim 30, as opposed to lifted from the base 20.

A plurality of additional preferred embodiments are now describedhereinbelow.

A Second Preferred Embodiment

A cooler base 120 and cooler wall 150 of a cooler in accordance with asecond preferred embodiment is now described with reference to FIG. 8.The cooler is generally identical in structure to the cooler 10described hereinabove with respect to FIGS. 1-7, except with respect toany changes illustrated and those changes now described regarding thecooler base 120 and cooler wall 150.

In particular, rather than having collapsible inner and outer walls52,54 both attached to a top surface 26 of a base 20, the cooler wall150 has only a collapsible outer wall 154 that is attached to a topsurface 126 of a base 120. Rather than being so attached, a collapsibleinner wall 152 instead extends upward from a bottom wall 151, which isintegrally formed with the collapsible inner wall 152. FIG. 8 is across-sectional view illustrating the cooler wall 150 and base 120. InFIG. 8, the base 120 has been simplified, and other components have beenomitted, to improve clarity.

It will be understood that, the intermediate space 114 includes not onlythe space defined between the collapsible inner and outer walls 152,154but additionally includes the space defined between the bottom wall 153and a top surface 126 of a base 120. Consequently, ice placed within theintermediate space 114 will cool the interior storage space not onlyfrom the sides thereof, but also from the bottom area of theintermediate space 114.

It will further be understood that, because the collapsible walls152,154 are not coupled or otherwise joined to one another at theirrespective bottom portions, the respective expanding and collapsing ofthe walls 152,154 are not necessarily dependent upon one another. Morespecifically, the cooler 110 is capable of transitioning to aconfiguration wherein the collapsible inner wall 152 is collapsed to anextent that is equal to or greater than the collapsed extent of theouter wall 154 (i.e., the inner wall 152 must be collapsed as much asthe outer wall 154, but may be collapsed to a greater extent than theouter wall 154 since the two collapsible walls are not directly jointedtogether). As such, the inner collapsible wall 152 may be transitionedbetween different collapsed states independent of the outer collapsiblewall 154 thus increasing or decreasing a volume of space defined betweenthe bottom wall 151 and the top surface 126 of the base 120.

A Third Preferred Embodiment

A cooler 210 in accordance with a third preferred embodiment is nowdescribed with reference to FIG. 9. The cooler 210 is generallyidentical in structure to the cooler 10 described hereinabove withrespect to FIGS. 1-7, except with respect to any changes illustrated andthose changes now described.

In particular, rather than having peripheral openings 39 defined betweeninner and outer rim walls 32,34 of rim 30, the cooler 210 includes anupper rim 230 having a closed top surface 235 without any peripheralopening 39 defined therein, as can be seen in FIG. 9. It will beunderstood that in the cooler 210, no access is provided to theintermediate space defined between the collapsible inner and outer walls252,254.

A Fourth Preferred Embodiment

A cooler 310 in accordance with a fourth preferred embodiment is nowdescribed with reference to FIG. 10. The cooler 310 is generallyidentical in structure to the cooler 10 described hereinabove withrespect to FIGS. 1-7, except with respect to any changes illustrated andthose changes now described.

In particular, the cooler 310 includes one or more drain conduits 372,as illustrated in FIG. 10. In this respect, a drain conduit 372comprises a passageway (preferably cylindrical) providing fluidcommunication between an exterior of the cooler 310 and the intermediatespace 314 that is defined between the inner and outer walls 352,354,whereby fluid (such as melted ice) may be drained from the intermediatespace 314. In a variation, the drain conduit 372 provides fluidcommunication between the exterior of the cooler 310 and the interiorspace 312, whereby fluid may be dispensed or drained from the interiorspace 312.

Furthermore, in another variation of this embodiment of the invention, acooler includes both a first drain conduit in fluid communication withthe intermediate space, and a second drain conduit in fluidcommunication with the interior space. Each drain conduit may be locatedon the exterior of the cooler either along a side or along a bottom ofthe cooler, and preferably includes a plug, valve, or spigot forselectively opening and closing the drain conduit and thereby controlflow of liquid through the drain conduit.

In at least one preferred variation of this embodiment of the invention,a cooler is a water cooler adapted to receive and retain water or otherliquid therein for dispensing via a spigot comprising a drain conduit.Preferably, the water cooler has a generally circular perimeter and isconfigured to hold between approximately five (5) gallons andapproximately ten (10) gallons of fluid.

A Fifth Preferred Embodiment

A cooler 410 in accordance with a fifth preferred embodiment is nowdescribed with reference to FIGS. 11A-11B. The cooler 410 is generallyidentical in structure to the cooler 10 described hereinabove withrespect to FIGS. 1-7, except with respect to any changes illustrated andthose changes now described.

In particular, the cooler 410 includes at least one gripping handle 436comprising portions of an upper rim 430 which extend outward on oppositelateral sides of the upper rim 430, beyond a lid 440, when the lid 440is in a closed position. Each gripping handle 436 is defined by agenerally rectangular or trapezoidal aperture 431 in the upper rim 430,as can be seen in FIG. 11A, which is a top view of the cooler 410. Inuse, a gripping handle 436 is grasped by a user and utilized to lift arespective end of the cooler 410 on which the gripping handle 436 isattached.

The cooler 410 is shown having a single gripping handle 436 in FIG. 11Band having two gripping handles 436 in FIG. 11A. In still yet anotherembodiment of the invention (not shown per se), a gripping handle 436 islocated on a side of the cooler 10 of FIGS. 1-7 that is opposite to theside on which the handle 28 is located. Of course, in other embodimentsof the invention, a cooler may have no handle 436 or handle 28. In stillyet other embodiments of the invention (not shown per se), one or moregripping handles 436 may be located in a similar manner on the base 20rather than on the upper rim 30.

A Sixth Preferred Embodiment

Two coolers 510 a,510 b in accordance with a sixth preferred embodimentare now described with reference to FIGS. 12A-12B. Each of the coolers510 a,510 b is generally similar (but not identical) in structure to thecooler 10 described hereinabove with respect to FIGS. 1-7, except withrespect to any changes illustrated and those changes now described.

In particular, rather than including two pairs of coaxial wheels 22, abase 520 a,520 b of the respective coolers 510 a,510 b includes only asingle pair of coaxial wheels 522 a,522 b, as can be seen in FIGS. 12Aand 12B. Preferably, the wheels 522 a,522 b are larger than inembodiments utilizing two pairs of coaxial wheels, and more specificallyare preferably large enough to easily roll across terrain such as sandon a beach, or grass in a park, as can be seen in FIG. 12B. The wheels522 b preferably are about ten inches in diameter with a tread width ofabout three inches.

A Seventh Preferred Embodiment

A cooler 610 in accordance with a seventh preferred embodiment is nowdescribed with reference to FIG. 13. The cooler 610 is generally similarin structure to the cooler 10 described hereinabove with respect toFIGS. 1-7, except with respect to any changes illustrated and thosechanges now described. In particular, the cooler 610 includes one ormore cup holders 649 defined in a lid 640 of the cooler 610, asillustrated in FIG. 13.

An Eighth Preferred Embodiment

A cooler 710 in accordance with an eighth preferred embodiment is nowdescribed with reference to FIGS. 14 and 14A-14D. The cooler 710 isgenerally similar (but not identical) in structure to the cooler 10described hereinabove with respect to FIGS. 1-7, except with respect toany changes illustrated and those changes now described.

In particular, the cooler 10 generally tapers from its top to itsbottom, in that the membrane of each collapsible wall 52,54 is taperedsuch that its top portion has a greater perimeter than its bottomportion; the base 20 is tapered such that its top surface 26 has agreater perimeter than its bottom 24; and the upper rim 30 is taperedsuch that a top portion of each rim wall 32,34 has a greater perimeterthan a bottom portion of each rim wall 32,34. It will thus beappreciated that the upper rim 30 has a substantially greater perimeterthan the base 20.

In contrast, the cooler 710 tapers from its bottom to its top. Forexample, in FIG. 14A, the cooler 710 is illustrated in a fully expandedconfiguration, in FIG. 14B, the cooler 710 is illustrated in a partiallycollapsed (or partially expanded) configuration; in FIG. 14C, the cooler710 is illustrated in another partially collapsed configuration; and inFIG. 14D, the cooler 710 is illustrated in a fully collapsed condition.As will be appreciated from these figures, a membrane of each of thecollapsible walls of the cooler 710 is tapered such that its bottomportion has a greater perimeter than its top portion; a base is taperedsuch that its bottom has a greater perimeter than its top surface; andan upper rim is tapered such that a bottom portion of each rim wall hasa greater perimeter than a top portion of each rim wall. It will also beappreciated that in the cooler 710, the base 720 has a substantiallygreater perimeter than the upper rim.

A Ninth Preferred Embodiment

A cooler 810 in accordance with a ninth preferred embodiment is nowdescribed with reference to FIGS. 15 and 15A-15D. The cooler 810 isgenerally similar (but not identical) in structure to the cooler 10described hereinabove with respect to FIGS. 1-7, except with respect toany changes illustrated and those changes now described.

In particular, rather than tapering simply from its top to its bottom orfrom its bottom to its top, the cooler 810 instead tapers from both itstop and its bottom towards a middle of the cooler 810, as can be seen inFIG. 15A, in which the cooler 810 is illustrated in a fully expandedconfiguration; in FIG. 15B, in which the cooler 810 is illustrated in apartially collapsed configuration; in FIG. 15C, in which the cooler 810is illustrated in another partially collapsed configuration; and in FIG.15D, in which the cooler 810 is illustrated in a fully collapsedcondition. In the cooler 810, a base 820 is tapered such that its bottom824 has a greater perimeter than its top surface 826; an upper rim 830is tapered such that a top portion of each rim wall 832,834 has agreater perimeter than a bottom portion of each rim wall 832,834; and, amembrane of each collapsible wall 852,854 is tapered such that itsbottom portion 872 and its top portion 874 each have a greater perimeterthan a middle portion 876 thereof. It will be appreciated that in thecooler 810, the base 820 has a perimeter generally equal to that of theupper rim 830, and that the base 820 and the upper rim 830 abut oneanother when the cooler 810 is in the fully collapsed configuration(FIG. 15D).

A Tenth Preferred Embodiment

A cooler 910 in accordance with an tenth preferred embodiment is nowdescribed with reference to FIG. 16. The cooler 910 is generally similar(but not identical) in structure to the cooler 10 described hereinabovewith respect to FIGS. 1-7, except with respect to any changesillustrated and those changes now described.

In particular, rather than having a generally rectangular perimeter withrounded corners, the cooler 910 has a base 920, an upper rim 930, innercollapsible wall (not shown), and outer collapsible wall 954. The cooler910 is shown in an expanded configuration, with the arrows indicatingthe direction of collapsibility. The inner and outer collapsible wallseach have a generally elliptical perimeter and, in particular, agenerally circular perimeter, as illustrated in FIG. 16. Additionally,the base 920 of cooler 910 includes four rotating wheels 923 attachedthereto such that each wheel is independently rotatable in anydirection, similar to those commonly disposed on the bottom of a dolly,such as, for example, the dolly disclosed in U.S. Pat. No. 3,608,921,which patent is hereby incorporated herein by reference. In a variation,the base 920 includes only three such rotating wheels 923, whichpreferably are disposed in a triangular arrangement rather than arectangular arrangement.

The cooler 910 further may include one or more drain conduits in fluidcommunication with the intermediate space between the inner and outerwalls and/or in fluid communication with the interior storage space ofthe cooler 910.

In another variation of the cooler 910, the wall of the cooler includesonly a single membrane, and does not include both inner and outer walls,and further includes a drain conduit that is located proximate a bottomof the cooler and that is disposed in fluid communication with theinterior space of the cooler. Such a cooler could be utilized, forexample, in dispensing Gatorade® or other beverage to athletes at asports event, wherein the beverage is actually mixed within the interiorspace of the cooler.

An Eleventh Preferred Embodiment

A cooler 1110 in accordance with an eleventh preferred embodiment is nowdescribed with reference to FIGS. 17A-17B. The cooler 1110 is generallysimilar in structure to the cooler 10 described hereinabove with respectto FIGS. 1-7, except with respect to any changes illustrated and thosechanges now described.

In particular, rather than having a handle 28 attached to a base 20, thecooler 1110 has a handle 1128 attached to an upper rim thereof atopposite sides of the upper rim 1130, as illustrated in FIG. 17A.Preferably, the handle 1128 is attached to the upper rim and isconfigured for pivoting movement relative thereto, and may be attachedfor pivoting about an axis via a hinge mechanism 1132. In such anarrangement, the handle 1128 may be configured to swivel over a top ofthe cooler 1110 from one side to another. The handle 1128 preferablyincludes a grip portion 1129. Additionally, the handle 1128 ispreferably configured to lock at one or both sides of the cooler 1110.It will be understood that if so locked, the handle 1128 will bedisposed in substantially the same plane as the inner collapsible wall(not show) and the outer collapsible wall 1154 of the cooler 1110, whenthe cooler 1110 is in a fully collapsed configuration, as illustrated inFIG. 17B. The cooler 1110 is shown in an expanded configuration in FIG.17A, with the arrows indicating the directions of collapsibility andexpansion; and the cooler 1110 is shown in a fully collapsedconfiguration in FIG. 17B.

Alternatively, the handle is fixedly attached to the upper rim 1130 suchthat the handle is not movable relative to the upper rim 1130 of thecooler 1110.

A Twelfth Preferred Embodiment

A cooler 1210 in accordance with a twelfth preferred embodiment is nowdescribed with reference to FIGS. 18A-18B. The cooler 1210 is generallysimilar in structure to the cooler 10 described hereinabove with respectto FIGS. 1-7, except with respect to any changes illustrated and thosechanges now described.

In particular, the cooler 1210 is configured such that its upper rim1230 engages with and locks into its base 1220 when the cooler 1210 isin a collapsed configuration. Preferably, the upper rim 1230 includes asnap fastener 1237 adapted to mate with a snap fastener 1225 of the base1220, as can be seen in FIG. 18A. FIG. 18B illustrates the cooler 1210secured in a fully collapsed configuration by the snap fasteners1225,1237.

A Thirteenth Preferred Embodiment

A cooler 1310 in accordance with a thirteenth preferred embodiment isnow described with reference to FIGS. 19A-19B. The cooler 1310 isgenerally similar in structure to the cooler 10 described hereinabovewith respect to FIGS. 1-7, except with respect to any changesillustrated and those changes now described.

In particular, the cooler 1310 is configured such that its outercollapsible wall 1354 is generally unexposed and thereby protected whenthe cooler 1310 is in a fully collapsed configuration, as shown in FIG.19B. More specifically, a portion of the base 1320 and a portion of theupper rim 1330 each extend at least partly over the outer collapsiblewall 1354, which is received with a respective space or recess thereof.These portions of the base 1320 and upper rim 1330 are shaped anddimensioned to mate with one another when the cooler is transitioned toa collapsed configuration. In contrast to the fully collapsedconfiguration of FIG. 19B, the cooler 1310 is depicted in an expandedconfiguration in FIG. 19A.

A Fourteenth Preferred Embodiment

A cooler 1410 in accordance with a fourteenth preferred embodiment isnow described with reference to FIGS. 20A-20B. The cooler 1410 isgenerally similar in structure to the cooler 10 described hereinabovewith respect to FIGS. 1-7, except with respect to any changesillustrated and those changes now described.

In particular, the cooler 1410, rather than having a generallyrectangular perimeter, has a perimeter with a generally arcuate portionand a generally linear portion, as illustrated in FIG. 20A. In thisrespect, the upper rim 1430 of the cooler generally resembles the outerperiphery of a toilet seat. Additionally, rather than having a lid thatis permanently attached to or otherwise fastened to an upper rim 1430,such as at hinges, the cooler 1410 includes a lid 1440 removably securedto an upper rim such that it can be completely removed and detached fromthe upper rim. This can be accomplished in various ways that are wellknown to the Ordinary Artisan. The collapsible cooler wall 1450 of thecooler 1410 in FIG. 20A is further shown in FIG. 20B.

A Fifteenth Preferred Embodiment

A cooler in accordance with a fifteenth preferred embodiment is nowdescribed with reference to FIG. 21, wherein a cooler wall 1550 isshown. The cooler is generally identical in structure to the cooler 10described hereinabove with respect to FIGS. 1-7, except with respect toany changes illustrated and those changes now described regarding thecooler wall 1550.

In particular, rather than having collapsible inner and outer walls52,54 both attached to a top surface 26 of a base 20, the cooler wall1550 has a collapsible inner wall 1552 extending upward from an innerbottom wall 1551, which is integrally formed with the collapsible innerwall 1552; and a collapsible outer wall 1554 extending upward from anouter bottom wall 1553, which is integrally formed with the collapsibleouter wall 1554. Both walls 1552,1554 are attached to the upper rim ofthe cooler in accordance with the fifteenth preferred embodiment

It will be understood that in the cooler wall 1550, the intermediatespace 1514 defined between the inner and outer walls 1552,1554 includesnot only the space defined between the collapsible inner and outer walls1552,1554 but additionally includes the space defined between the innerbottom wall 1551 and the outer bottom wall 1553.

It will further be appreciated that, because the collapsible walls1552,1554 are not coupled to one another in any fashion at bottomportions of their respective membranes, the collapsible walls 1552,1554can be independently collapsed or expanded. More specifically, thecooler including the cooler wall 1550 is capable of transitioning to aconfiguration wherein the collapsible inner wall 1552 is collapsed tothe same or to a greater extent than the collapsible outer wall 1554(e.g., to a first expanded state with the outer wall in a secondexpanded state), thus increasing the volume of space defined between theinner bottom wall 1551 and the outer bottom wall 1553.

A Sixteenth Preferred Embodiment

A cooler in accordance with a sixteenth preferred embodiment is nowdescribed with reference to FIG. 22, wherein a cooler wall 1650 isshown. In particular, the cooler wall 1650 is similar to the cooler wall1550, but rather than having inner and outer bottom walls 1551,1553 likethe cooler wall 1550, the cooler wall 1650 has a single bottom wall 1653from which collapsible inner and outer walls 1652,1654 extend upwards.

A Seventeenth Preferred Embodiment

In a seventeenth preferred embodiment, a cooler 1710 illustrated in FIG.23 generally is comprised of the cooler wall 1650; as will beappreciated, the cooler 1710 thus does not include an upper rim or base.The cooler 1710 includes an inner collapsible wall 1752 and outercollapsible wall 1754 with a single bottom wall 1753. Ice is showndisposed within the intermediate space between the inner collapsiblewall 1752 and outer collapsible wall 1754, with a top of the outercollapsible wall 1754 extending above a top of the inner collapsiblewall 1752. Additionally, in a variation of cooler 1710, connectors orspokes are provide that extend between and join together the inner andouter collapsible walls of the cooler. Preferably, the connectors arerigid or semirigid and can be integrally formed (such as in a co-moldingmanufacturing process) with the inner collapsible wall and/or the outercollapsible.

An Eighteenth Preferred Embodiment

In an eighteenth preferred embodiment, rather than including collapsibleinner and outer walls, a cooler includes only a single collapsible wall.Such a cooler preferably includes a base and an upper rim, but inalternative embodiments lacks one or both of these features.

A Nineteenth Preferred Embodiment

A cooler 1908 in accordance with a nineteenth preferred embodiment isnow described with reference to FIG. 24. The cooler 1908 is generallyidentical in structure to the cooler 10 described hereinabove withrespect to FIGS. 1-7, except with respect to any changes illustrated andthose changes now described. In particular, rather than havingcollapsible inner and outer walls 52,54 each comprising a singlemembrane as disclosed, for example, with regard to the cooler 10described above, the cooler 1908 includes collapsible inner wall (notshown) and outer wall 1954, each of which comprises a plurality ofmembranes. Preferably, each respective group of membranes are joinedtogether by reinforcing, rigid portions 1982 forming one of thecollapsible walls of the cooler 1908. Each membrane of an intermediatesection is preferably attached to the immediately adjoining portions1982.

Transportable Cooler Apparatus

In variations of some of the foregoing embodiments in which the coolerincludes a wheeled platform (such as wheeled platform 1990 of cooler1908), the portion of the cooler defining the interior storage space(including the lid and collapsible wall) may include a base and may beremovably coupled to the wheeled platform and can be coupled anduncoupled therefrom. Such wheeled platform is preferably durable andrigid and is formed in one or more molding processes. Moreover, as usedherein, “molding” may include injection molding, rotational molding,and/or blow molding. Furthermore, the wheeled platform may be integrallyformed as a single piece or may be separately formed as multiple piecesand, thereafter, connected or joined together.

The cooler portion may be coupled to the wheeled platform by couplingcomponents. When the cooler is coupled to the wheeled platform, thecoupling components preferably are disposed in interlocking engagementwith one another, whereby the cooler is securely coupled to the wheeledplatform for safe transportation on the wheeled platform, i.e., thecooler is protected from falling off of the wheeled platform duringtransport over rough terrain such as grass or a sand dune. The couplingcomponents may comprise snap components and/or hook and loop fasteningcomponents.

Portable coolers that may be removably coupled to a wheeled platform arefurther described in, for example, Vanderberg U.S. Pat. No. 7,387,305,which is incorporated herein by reference.

Other Embodiments of the Invention

Additional features that may be incorporated into coolers of the presentinvention and that fall within the scope of the present invention aredisclosed in the incorporated Vanderberg references. Such incorporatedfeature may be utilized together in combination with the aspects and/orone or more features disclosed herein.

Based on the foregoing description, it will be readily understood bythose persons skilled in the art that the present invention issusceptible of broad utility and application. Many embodiments andadaptations of the present invention other than those specificallydescribed herein, as well as many variations, modifications, andequivalent arrangements, will be apparent from or reasonably suggestedby the present invention and the foregoing descriptions thereof, withoutdeparting from the substance or scope of the present invention.

Accordingly, while the present invention has been described herein indetail in relation to one or more preferred embodiments, it is to beunderstood that this disclosure is only illustrative and exemplary ofthe present invention and is made merely for the purpose of providing afull and enabling disclosure of the invention. The foregoing disclosureis not intended to be construed to limit the present invention orotherwise exclude any such other embodiments, adaptations, variations,modifications or equivalent arrangements.

1. An expandable and collapsible cooler, comprising: (a) a cooler walldefining an interior storage space of the cooler, the cooler wallcomprising an inner collapsible wall and an outer collapsible wall; and(b) a bottom wall to which the collapsible inner and outer walls arejoined and from which the collapsible inner and outer walls extend; (c)wherein the inner and outer collapsible walls define an intermediatespace therebetween for insulating the interior storage space from anexterior of the cooler; (d) wherein the inner collapsible wall comprisesa plurality of flexible elastomeric membranes joined together by rigidportions to form the inner collapsible wall, each membrane including aplurality of hinge lines at which the membrane is configured to bendsuch that the collapsible wall is transitional between a respectivecollapsed configuration and a respective expanded configuration bybending along the hinge lines, each of the configurations correspondingto a stable configuration of the cooler; and (e) wherein the outercollapsible wall comprises a plurality of flexible elastomeric membranesjoined together by rigid portions to form the outer collapsible wall,each membrane including a plurality of hinge lines at which the membraneis configured to bend such that the collapsible wall is transitionalbetween a respective collapsed configuration and a respective expandedconfiguration by bending along the hinge lines, each of theconfigurations corresponding to a stable configuration of the cooler. 2.The expandable and collapsible cooler of claim 1, wherein the rigidportions that join the membranes of the inner collapsible wall eachtransversely extends around a periphery of the inner collapsible wall;and wherein the rigid portions that join the membranes of the outercollapsible wall each transversely extends around a periphery of theouter collapsible wall.
 3. The expandable and collapsible cooler ofclaim 1, wherein a top of the outer collapsible wall extends above a topof the inner collapsible wall when the membrane of each is fullyexpanded.
 4. The expandable and collapsible cooler of claim 1, whereinthe inner and outer collapsible walls each tapers outwardly in extendingfrom the bottom wall.
 5. The expandable and collapsible cooler of claim1, wherein the inner and outer collapsible walls each tapers inwardly inextending from the bottom wall.
 6. The expandable and collapsible coolerof claim 1, wherein the bottom wall defines a bottom surface of theinterior storage space or a bottom surface of the intermediate space. 7.The expandable and collapsible cooler of claim 1, wherein the bottomwall defines a bottom surface of the interior storage space and theintermediate space.
 8. The expandable and collapsible cooler of claim 1,wherein the inner collapsible wall comprises peripheral portions thatnest within each other when the inner collapsible wall is fullycollapsed, and wherein the outer collapsible wall comprises peripheralportions that nest within each other when the outer collapsible wall isfully collapsed.
 9. The expandable and collapsible cooler of claim 8,wherein the nested peripheral portions of the outer collapsible wallcollectively surround the nested peripheral portions of the innercollapsible wall.
 10. The expandable and collapsible cooler of claim 9,wherein the nested peripheral portions of the outer collapsible wall andthe nested peripheral portions of the inner collapsible wall aregenerally arranged in a common plane.
 11. An expandable and collapsiblecooler, comprising: (a) a cooler wall defining an interior storage spaceof the cooler, the cooler wall comprising an inner collapsible wall andan outer collapsible wall; and (b) a bottom wall to which thecollapsible inner and outer walls are joined and from which thecollapsible inner and outer walls extend; (c) wherein the inner andouter collapsible walls define an intermediate space therebetween forinsulating the interior storage space from an exterior of the cooler;(d) wherein the inner collapsible wall comprises a plurality of flexibleelastomeric membranes joined together by rigid portions to form theinner collapsible wall, each membrane formed of silicone rubber andincluding a plurality of hinge lines at which the membrane is configuredto bend such that the collapsible wall is transitional between arespective collapsed configuration and a respective expandedconfiguration by bending along the hinge lines, each hinge line of theplurality of the hinge lines being generally less thick than otherportions of the membrane, and each of the configurations correspondingto a stable configuration of the cooler; and (e) wherein the outercollapsible wall comprises a plurality of flexible elastomeric membranesjoined together by rigid portions to form the outer collapsible wall,each membrane formed of silicone rubber and including a plurality ofhinge lines at which the membrane is configured to bend such that thecollapsible wall is transitional between a respective collapsedconfiguration and a respective expanded configuration by bending alongthe hinge lines, each hinge line of the plurality of the hinge linesbeing generally less thick than other portions of the membrane, and eachof the configurations corresponding to a stable configuration of thecooler.
 12. The expandable and collapsible cooler of claim 11, whereinthe cooler further comprises one or more openings through which accessis provided to the intermediate space defined between the inner andouter collapsible walls.
 13. The expandable and collapsible cooler ofclaim 11, wherein the rigid portions that join the membranes of theinner collapsible wall each transversely extends around a periphery ofthe inner collapsible wall; and wherein the rigid portions that join themembranes of the outer collapsible wall each transversely extends arounda periphery of the outer collapsible wall.
 14. The expandable andcollapsible cooler of claim 11, wherein the collapsible cooler walltapers outwardly in extending from the bottom wall.
 15. The expandableand collapsible cooler of claim 11, wherein the collapsible cooler walltapers inwardly in extending from the bottom wall.
 16. An expandable andcollapsible cooler, comprising: (a) a cooler wall defining an interiorstorage space of the cooler, the cooler wall comprising an innercollapsible wall and an outer collapsible wall (b) a bottom wall towhich the collapsible inner and outer walls are joined and from whichthe collapsible inner and outer walls extend; (c) wherein the inner andouter collapsible walls define an intermediate space therebetween forinsulating the interior storage space from an exterior of the cooler;(d) wherein the inner collapsible wall comprises a plurality of flexibleelastomeric membranes joined together by rigid portions to form theinner collapsible wall, each membrane including a plurality of hingelines at which the membrane is configured to bend such that thecollapsible wall is transitional between different respectiveconfigurations by bending along the hinge lines, the configurationscorresponding to different stable configurations of the cooler andcomprising, (i) an expanded configuration of the inner collapsible wall,(ii) a collapsed configuration of the inner collapsible wall, (iii) afirst partially expanded configuration of the inner collapsible wall,and (iv) a second partially expanded configuration of the innercollapsible wall; (e) wherein the outer collapsible wall comprises aplurality of flexible elastomeric membranes joined together by rigidportions to form the outer collapsible wall, each membrane including aplurality of hinge lines at which the membrane is configured to bendsuch that the collapsible wall is transitional between differentrespective configurations by bending along the hinge lines, theconfigurations corresponding to different stable configurations of thecooler and comprising, (i) an expanded configuration of the outercollapsible wall, (ii) a collapsed configuration of the outercollapsible wall, (iii) a first partially expanded configuration of theouter collapsible wall, and (iv) a second partially expandedconfiguration of the outer collapsible wall.
 17. The expandable andcollapsible cooler of claim 16, wherein the cooler further comprises oneor more openings through which access is provided to the intermediatespace defined between the inner and outer collapsible walls.
 18. Theexpandable and collapsible cooler of claim 16, wherein the rigidportions that join the membranes of the inner collapsible wall eachtransversely extends around a periphery of the inner collapsible wall;and wherein the rigid portions that join the membranes of the outercollapsible wall each transversely extends around a periphery of theouter collapsible wall.
 19. The expandable and collapsible cooler ofclaim 16, wherein the collapsible cooler wall tapers outwardly inextending from the bottom wall.
 20. The expandable and collapsiblecooler of claim 16, wherein the collapsible cooler wall tapers inwardlyin extending from the bottom wall.